KENDRIYA VIDYALAYA NELLORE

REACHING THE AGE OF ADOLESCENCE- ACTIVITIES

  1. Collect the data on heights and age of boys and girls of your class .draw graphs showing height and age for boys and girls on the same graph paper. What conclusion can be drawn from the graphs?
  2. Find out the information early marriage in India and explain why early marriage is not good for couple.
  3. In our country there are 882 adolescent females for every 100 males according to the census. Find out the reason of this low ratio.
  4. Find out the information on AIDS/HIV and write a speech.

LIGHT- ACTIVITIES

Teacher

  1. Demonstration of laws of reflection
  2. Dispersion of light using prism

Student

  1. Images formed by two plane mirrors at different angles.
  2. Observe the changes of your friend’s iris before and after flashing light.
  3. Activity to show the blind spot
  4. Activity to show the persistence of vision.

REPRODUCTION IN ANIMALS - ACTIVITIES

1. Students will brainstorm types of life cycles OF ANIMALS with which they are familiar.

2. Class discussion of what all cycles have in common (circular recurring pattern).

3. Students will create a scientific definition for “life cycle.”

4. Read “Reproduction in Animals”

5. Discuss and compare differences between external and internal fertilization.

6. On a transparency. or written on the board, students will identify the stages ofdevelopment for a frog, a chicken, and a human and sequence them correctly.

7. Students are broken into small groups of 4 or 5 for life cycle activity.

8. Each student is then given a copy of pictures of the stages of a frog, a chicken, ora human.

9. Students are then given a tag board wheel, cut-out page, and brad to construct alife cycle wheel.

10. Students construct the cover for the booklet by first folding the cover page inHalf, then selecting a cut-out to use.

11. Students cut out the wheel and the pictures of the developmental stages they willbe using.

12. Students will need to plan where to glue the pictures before they begin securingthem to the paper. It will take some planning so all of the pictures will appear inthe wheel when it is turned. Please note the pictures need to be glued to thewheel in a reverse clockwise sequence to appear in the correct order when thewheel is spun.

13. Students will secure the wheel to the cover page using a brad.

14. Students will draw and color an appropriate picture on the cover of their booklet

Teacher will read “Development of the Embryo

  1. Tell the students to pay attention and listen verycarefully.

2. Tell the students that they will be playing a board game called “Stages of anEmbryo.”

3. Break students up into groups of 4.

4. Pass out a game board, one set of game cards, andgame pieces/markers to each group.

5. Pass out the rules for “Stages of an Embryo” game.

6. Go over the rules.

7. Have students play the game. Walk around and observe.

II .Parent Permission Letter should be sent home and returned to the teacher before the class views the movies. Viewing the movies may be an optional activity.

Boys and girls can be separated for video and discussion.

1. Introduce the topic of the movie. Explain to students that the movie will offerinformation on the changes that occur in the human body during puberty, andhow to manage these changes as they begin.

2. Tell students that discussion will be held after the movie and that any questionsthey may have can be asked at that time.

3. Show the movie. Encourage students to be mature and respectful while watchingthe movie.

4. At the end of the movie, begin the discussion by explaining that everyone beginspuberty at different times, but it is important that everyone know what to expect.

5. Try to create an atmosphere that is supportive and polite during the discussion.

6. Begin answering students’ questions. Keep the answers informative yet brief.For questions that require more personal information, refer the students to theirParents, guardian, nurse, or health professional.

7. Personal Hygiene and Health Day. Invite community healthcare workers and representatives to present information and advice to parents andstudents.

8.What animals abandon their offspring? Find out this and more as you explore reproduction in the animal world.Did you know that all animals must reproduce to survive? In this project you will be learning some interesting facts about reproduction in animals. After you have some background information you will have a chance to select 3 animals and complete a chart on reproduction.

9.To visit some ponds or slow flowing streams during spring or rainy season and observe the color and size of frog’s eggs floating on water.

10. Study budding in yeast

CELL-STRUCTURE AND FUNCTIONS - ACTIVITIES

1.Observe cells of an onion peel under a microscope

2.Identify the nucleus of cell

3.Listing the differences between a plant cell and an animal cell

4.Draw atypical plant cell and label the parts

5Draw an animal cell and label the parts

6.Prepare a model of a plant cell and an animal cell

7.Prepare a power point presentation on cell ,its struicture and functions

8 Collect some pictures related to unicellular and multi cellular organisms

9.List the functions of each organelle of a cell

10. Observe the slides under the microscope

a) amoeba b) a nerve cell c) stomata

CHEMICAL EFFECTS OF ELECTRIC CURRENT - ACTIVITIES

TEACHER

1. Demonstrate Purification of copper through electroplating

2. Demonstrate Electrolysis of water

STUDENT

1. Activity to differentiate poor and good conductors

2. Activity to show the conduction of electricity through fruits and vegetables

3. Observation of magnetic effect of current using compass and tester

4. Activity to show conduction of electricity through distilled water

5. Activity to show chemical effects of electric current using compass, potato and tester

STARS AND SOLAR SYSTEM - ACTIVITIES

TEACHER

  1. An activity with an umbrella to show that a polar star does not appear to move
  2. an activity with a top to elicit that a planet also rotates on its own axis like a top
  3. an outdoor activity to demonstrate the rotation and revolution of earth

STUDENTS

  1. Watch the night sky locate and draw the constellation studied in the class
  2. Students will write a poem on the moon
  3. They also will prepare a brief hand out of the uniqueness of each planets of the solar system.
  4. Students will prepare a documentary on India and space science

COAL AND PETROLEUM - ACTIVITIES

1. Get an outline map of India. Mark the places in the map where coal , petroleum and natural gas are found. Show the places where petroleum refineries are situated.

2. Choose any five families of your neighborhood. Enquire whether their energy consumption (coal, gas, electricity, petrol, kerosene) has increased or decreased in the last five years. Enquire also about the measures they adopt to conserve energy.

3. Find out the location of major thermal power plants in India. What could be the reasons for their being located at those places?

4. Gather information about solar energy, wind energy, hydroelectric energy and nuclear energy and draft a report.

5. Energy saved is energy produced – elaborate.

COMBUSTION AND FLAME - ACTIVITIES

The teacher will: enlist some materials from the surroundings and classify them as combustible and non combustible substances.

IDENTIFICATION: If you find such a symbol/sign on a box etc, what does it represent?

Demonstrates the activity to show combustion as a chemical reaction with the production of heat or both heat and light.(using Mg ribbon)

Demonstrates the activity to show that oxygen (air) is essential for the burning of candle

Differentiates non - inflammable and inflammable substances in terms of ignition/kindling point

CONSERVATION OF PLANTS AND ANIMALS - ACTIVITIES

1. In order to meet the ever increasing demand in factories and for shelter, trees are being continually cut. Is it justified to cut trees for such projects ? Discuss and prepare a brief report.

2. Why should paper be saved? Prepare a list of ways by which you can save paper.

3. Prepare a project: “Need for conservation of wildlife”

4. Make a colorful collage showing: Wildlife sanctuary, Biosphere reserve, zoo, National park, Botanical gardens ofIndia. Write necessary information also.

5. Make the list of Sanctuary, National park and Biosphere reserve in your district,

METALS AND NON-METALS - ACTIVITIES

TEACHERS

  1. To show that the oxides of non-metal (eg. sulphur) re acidic in nature and oxides of metals are basic in nature.
  2. To show the reaction of sodium metal with water.
  3. To show the reaction of metals and non-metals with dil.HCl and Dil. H2SO4.

STUDENTS

  1. To study the malleability of some metals and non-metals
  2. To show that metals are good conductors of electricity and non-metals (except graphite) are non-conductors of electricity
  3. To test the nature of rust.
  4. To show that more reactive metal can displace less reactive metal from its salt solution but the reverse is not possible.
  5. GROUP ACTIVITY:
  6. Prepare index cards for any four metals and any four non-metals. The card should have information like name of metal/non-metal; its physical properties, chemical properties and its uses.
  7. Visit a blacksmith and observe how metals are moulded.
  8. Discuss why gold is preferred for making jewellery.

MICRO ORGANISMS: FRIEND AND FOE - ACTIVITIES

TEACHER

  • To show that bacterial growth is used for making curd
  • To check the effect of temperature on bacterial growth.
  • To study the fermentation of sugar by yeast cells.
  • To study bread mould under a microscope.
  • To study the Rhizobium bacteria in root nodules of a pea plant.

STUDENTS

  • Study the fermentation in Maida.
  • Group Discussion - microorganism –friend or foe.
  • To study bread mould under a microscope.

SOME NATURAL PHENOMENA - ACTIVITIES

STUDENT

  1. Collect different objects and materials like refill, balloon, eraser, steel spoon, plastic scale, pencil and try to charge them one by one by rubbing with polythene/woolen cloth/silk and record your observations.
  2. Using charged balloons show that like charges repel each other.
  3. Make a simple electroscope and touch its end with a charged object.
  4. Make a model to show the structure of the earth.
  5. Make a model to show the focus and epicenter when an earth quake originates.
  6. Make a working model of a seismograph.

TEACHER

  1. Demonstrate the path of current through lightning conductor using a model.
  2. Demonstrate the working of an electroscope and charge it by conduction and discharge it by earthing.

SOUND - ACTIVITIES

  1. Draw human ear and explain the hearing mechanism.
  2. How will you show that a material medium is needed for the propagation of the sound?

SYNTHETIC FIBRES AND PLASTICS – ACTIVITIES

Sl No / Teacher / Students
1 / Brainstorming session regarding why do we wear clothes and their sources / Students answer
2 / The effect of burning the fibers-demo / Observe and conclude
Cotton-burns with a paper burning smell
Silk and wool-Burns with smell of burning hair
Synthetic fibers Beads up, melts and curls up
3 / Strength of the fibers-Activity
3 students will be invited to test the strength of cotton, wool and nylon fiber by trying to break them / Students perform the activity and conclude.
Nylon is the strongest among cotton, wool and silk
4 / Definition of monomer and polymer-Demo / Students identify the beads as the building the blocks of the string.
5 / Correlation / As bead to a string, monomer is to polymer students realized.
6 / Absorbing/ Water holding capacity of different fabrics-activity. 3 students are given 3 different fabrics and given 10 ml of water each in 3 beakers. They are asked to soak them for a minute and are asked to remove the fabric and measure the amount of water remaining in the beaker. / Students perform the activity and understand that synthetic fibers are drip dry and do not hold much water while cotton absorbs and holds.
7 / Quiz by teacher- which fabric is suitable as inner wear and why? / Students’ reply-Cotton is the best as it has to absorb sweat.
8 / Summing up- Group activity. Distribute the name of the fibers, their properties and flash cards as well as mini dresses made of different materials / Response
Arrange the cards and the dresses as per the theme